Is My Anime Crossover Cheat Actually Myself?

My Teen Romantic Comedy SNAFU + Saekano: How to Raise a Boring Girlfriend + Kaguya-sama: Love Is War + ??? After transmigrating, Kuya discovers a huge problem. Even though he transmigrated with a System, why does he look nothing like a protagonist? Kasumigaoka: “Analyze that monster's weakness.” Kuya: “Yes!” Eriri: “Open your support System! How am I supposed to fight otherwise?” Kuya: “Sure!” Yukinoshita: “If you're just going to hide in my mind and not say a word, you're honestly less useful than the TV at home.” Kuya: “Understood!” Maybe this book could just as well be called “I'm a Workhorse in Another World.”